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  • Recommended vegetative growth time clones: 7 - 10 days

    Recommended number of clones per squaremeter: 12-15

    Recommended vegetative growth time seedlings: 4-5 weeks

    Recommended number of seedlings per squaremeter: 9

    Indoor flowering time: 56 - 63 Days

    Indoor yield: 350 - 600 gr/m2

    Outdoor/Greenhouse harvest time: mid/late October


    (This same story was also printed in "The Big Book of BUDS" by Ed Rosenthal)

    Along with AK-47 and the original Kali Mist, Chronic was bred in the days when Serious still had an enormous space to conduct experiments: the early 1990s. Chronic was first developed in 1994 with the goal of producing a plant that combined quality with a good yield.

    Up until that point, it seemed like there was some incompatibility between these two selection characteristics, and growers often had to sacrifice one for the other.

    I wanted to create a variety that proved this idea wrong, some- thing that produced enormous buds without compromising a quality high for an enjoyable flavor or vice versa. After its in-troduction, Chronic won 3rd place in the High Times Cannabis Cup in the Hydro division - that was the only time it was entered in the Cup. But many other power-hitting Indica strains have been released since 1994 that follow along the same lines, offering up both quality and yield with a mostly indica stone. By the late 1990s, Chronic seemed "dated."

    I decided it was time to give it a little more complexity and re-fresh this variety without losing any of the characteristics that made it so well-liked to start out with.

    I bred more sativa into the indica dominant Chronic, which gave it a more complex, full-spectrum high without losing the nice yield and flavor.

    The facelift also improved both the strength and resin content.

    The mildly sweet scent with a bit of spiciness also stayed intact, but curing and drying are fundamental to carrying this characteristic from the live plant to the smokeable product.

    Even while living, the wildflower scent is subtle, but it will be lost for good if not dried properly.

    When put in plastic before completely dry, the scent is irreversibly gone, more so for this variety than for any others I've worked with.

    But if you let it dry thoroughly, the aroma develops a very strong, sweet smell which doesn't fade.

    For flavor connoisseurs, this could be the difference between thinking Chronic is fabulous pot or just okay.

    About ‘topping’ of Chronic


    Question about the "CHRONIC" strain:

    could you me please explain this phrase on your site:

    "Do not top plants to encourage multiple big buds, as this strain does not respond well".

    What do you mean by saying this plant does not respond well to topping?



    This means that it is not a good idea to top (or clip) the plant (= cutting the very tip of the main stem to encourage forming of bigger side-buds).

    Chronic does not respond in a way that those sidebuds give a higher yield together than what the main bud should give.

    The main bud produces a huge cola which gives more weight when you not top it, than the total of the sidebuds when you would.


    Yield indicated for Chronic indoors


    I have a question about the yield indicated indoor for "Chronic".

    The web site indicates a yield based on a per meter squared formula.

    Does that mean one meter square dedicated for one plant, or does it mean all the plants that can be crammed together in a meter square.

    Guess what I am asking is (in a hypothetical greenhouse in a country where such activity is legal, how far apart should "chronic" be placed for the best yield.



    Chronic usually does best with about 12 plants per


    Chronic cutting/cloning and yield


    which plant from the serious seeds available collection produces the most yield.

    Also if I use cuttings/clones to make new plants will they have the same yield as the original plant.



    From our strains Chronic is by far the biggest yielder (up to 600gr/m2).

    A clone will yield the same (if you treat it the same way) as the original, as they are the same.


    Chronic 'pinching'

    What problems are there in pinching out Chronic?

    Does this mean I can't use it for a mother plant?


    Hi Peter,

    you can use Chronic for motherplants, no problem.

    But when you flower the plants some people like to clip the very top part away.

    This does promote sidebranches to grow out and as a result the plant ends up with 2 or 4 buds in stead of 1.

    Only in Chronic the total yield of those 4 much smaller buds is less than the 1 main bud would be.